Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications

Autores
Cavasín, Sol Aldana; Cerda, Ignacio Alejandro; Apesteguía, Sebastián
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Sphenodontians are a group of vertebrates with a vast taxonomic diversity and worldwide distribution of their fossils. Although they have been the subject of many studies on their phylogeny and morphology, those focused on their paleobiology are still scarce. We present here the osteohistology of eleven postcranial elements corresponding to a single specimen of Priosphenodon avelasi, an eilenodontine sphenodontian from Cenomanian–Turonian rocks of Río Negro (Argentina). The bone samples described here share a parallel-fibered type of matrix. The degree of vascularization varies in all the samples, but none of them present a significant density of primary vascular canals. Lines of arrested growth were observed in all appendicular elements, being better preserved in the humerus, radius and fibula. Extrinsic fibers were observed only in reduced regions of the cortex of the ulna and in one of the phalanges. The primary bone tissue suggests that the specimen had a relatively low growth rate with alternation between slow and accelerated stages. The latter could explain why this taxon reached the largest sizes of all known sphenodontians.
Fil: Cavasín, Sol Aldana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación de Historia Natural Félix de Azara; Argentina
Materia
Sphenodontia
Osteohistology
Paleobiology
Gigantism
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/256875
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implicationsCavasín, Sol AldanaCerda, Ignacio AlejandroApesteguía, SebastiánSphenodontiaOsteohistologyPaleobiologyGigantismhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Sphenodontians are a group of vertebrates with a vast taxonomic diversity and worldwide distribution of their fossils. Although they have been the subject of many studies on their phylogeny and morphology, those focused on their paleobiology are still scarce. We present here the osteohistology of eleven postcranial elements corresponding to a single specimen of Priosphenodon avelasi, an eilenodontine sphenodontian from Cenomanian–Turonian rocks of Río Negro (Argentina). The bone samples described here share a parallel-fibered type of matrix. The degree of vascularization varies in all the samples, but none of them present a significant density of primary vascular canals. Lines of arrested growth were observed in all appendicular elements, being better preserved in the humerus, radius and fibula. Extrinsic fibers were observed only in reduced regions of the cortex of the ulna and in one of the phalanges. The primary bone tissue suggests that the specimen had a relatively low growth rate with alternation between slow and accelerated stages. The latter could explain why this taxon reached the largest sizes of all known sphenodontians.Fil: Cavasín, Sol Aldana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación de Historia Natural Félix de Azara; ArgentinaPolish Academy of Sciences. Institute of Paleobiology2024-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/256875Cavasín, Sol Aldana; Cerda, Ignacio Alejandro; Apesteguía, Sebastián; Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 1; 2-2024; 29-380567-79201732-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app010712023.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.4202/app.01071.2023info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:27Zoai:ri.conicet.gov.ar:11336/256875instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:00:27.495CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
title Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
spellingShingle Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
Cavasín, Sol Aldana
Sphenodontia
Osteohistology
Paleobiology
Gigantism
title_short Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
title_full Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
title_fullStr Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
title_full_unstemmed Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
title_sort Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications
dc.creator.none.fl_str_mv Cavasín, Sol Aldana
Cerda, Ignacio Alejandro
Apesteguía, Sebastián
author Cavasín, Sol Aldana
author_facet Cavasín, Sol Aldana
Cerda, Ignacio Alejandro
Apesteguía, Sebastián
author_role author
author2 Cerda, Ignacio Alejandro
Apesteguía, Sebastián
author2_role author
author
dc.subject.none.fl_str_mv Sphenodontia
Osteohistology
Paleobiology
Gigantism
topic Sphenodontia
Osteohistology
Paleobiology
Gigantism
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Sphenodontians are a group of vertebrates with a vast taxonomic diversity and worldwide distribution of their fossils. Although they have been the subject of many studies on their phylogeny and morphology, those focused on their paleobiology are still scarce. We present here the osteohistology of eleven postcranial elements corresponding to a single specimen of Priosphenodon avelasi, an eilenodontine sphenodontian from Cenomanian–Turonian rocks of Río Negro (Argentina). The bone samples described here share a parallel-fibered type of matrix. The degree of vascularization varies in all the samples, but none of them present a significant density of primary vascular canals. Lines of arrested growth were observed in all appendicular elements, being better preserved in the humerus, radius and fibula. Extrinsic fibers were observed only in reduced regions of the cortex of the ulna and in one of the phalanges. The primary bone tissue suggests that the specimen had a relatively low growth rate with alternation between slow and accelerated stages. The latter could explain why this taxon reached the largest sizes of all known sphenodontians.
Fil: Cavasín, Sol Aldana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación de Historia Natural Félix de Azara; Argentina
description Sphenodontians are a group of vertebrates with a vast taxonomic diversity and worldwide distribution of their fossils. Although they have been the subject of many studies on their phylogeny and morphology, those focused on their paleobiology are still scarce. We present here the osteohistology of eleven postcranial elements corresponding to a single specimen of Priosphenodon avelasi, an eilenodontine sphenodontian from Cenomanian–Turonian rocks of Río Negro (Argentina). The bone samples described here share a parallel-fibered type of matrix. The degree of vascularization varies in all the samples, but none of them present a significant density of primary vascular canals. Lines of arrested growth were observed in all appendicular elements, being better preserved in the humerus, radius and fibula. Extrinsic fibers were observed only in reduced regions of the cortex of the ulna and in one of the phalanges. The primary bone tissue suggests that the specimen had a relatively low growth rate with alternation between slow and accelerated stages. The latter could explain why this taxon reached the largest sizes of all known sphenodontians.
publishDate 2024
dc.date.none.fl_str_mv 2024-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/256875
Cavasín, Sol Aldana; Cerda, Ignacio Alejandro; Apesteguía, Sebastián; Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 1; 2-2024; 29-38
0567-7920
1732-2421
CONICET Digital
CONICET
url http://hdl.handle.net/11336/256875
identifier_str_mv Cavasín, Sol Aldana; Cerda, Ignacio Alejandro; Apesteguía, Sebastián; Bone microstructure of the sphenodont rhynchocephalian Priosphenodon avelasi and its paleobiological implications; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 1; 2-2024; 29-38
0567-7920
1732-2421
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app010712023.html
info:eu-repo/semantics/altIdentifier/doi/10.4202/app.01071.2023
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269638988136448
score 13.13397

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